faces.h

Go to the documentation of this file.

/*********************************************************************
* Face-specific computer vision algorithms.
*
**********************************************************************
*
* Software License Agreement (BSD License)
* 
*  Copyright (c) 2008, Willow Garage, Inc.
*  All rights reserved.
* 
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
* 
*   * Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*   * Redistributions in binary form must reproduce the above
*     copyright notice, this list of conditions and the following
*     disclaimer in the documentation and/or other materials provided
*     with the distribution.
*   * Neither the name of the Willow Garage nor the names of its
*     contributors may be used to endorse or promote products derived
*     from this software without specific prior written permission.
* 
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
*  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
*  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
*  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
*  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
*  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
*  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
*  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
*  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
*  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
*  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
*  POSSIBILITY OF SUCH DAMAGE.
*********************************************************************/

/* Author: Caroline Pantofaru */

#ifndef FACES_H
#define FACES_H



#include <stdio.h>
#include <iostream>
#include <vector>

#include <opencv/cv.hpp>
#include <opencv/cxcore.hpp>
#include <opencv/cvaux.hpp>

#include "image_geometry/stereo_camera_model.h"
#include "ros/time.h"
#include <ros/console.h>
#include <boost/thread/mutex.hpp>
#include <boost/bind.hpp>
#include <boost/thread/thread.hpp>
#include <boost/thread/condition.hpp>


using namespace std;

#define FACE_SIZE_MIN_M 0.1 
#define FACE_SIZE_MAX_M 0.5 
#define MAX_FACE_Z_M    8.0 
// Default thresholds for face tracking.
#define FACE_SEP_DIST_M 1.0 
namespace people {


struct Box2D3D {
  cv::Point2d center2d;
  cv::Point3d center3d;
  double width2d;
  double width3d;
  cv::Rect box2d;
  string status;
  int id;
};


struct Face {
  string id;
  string name; 
};


class Faces
{
 public:

  // Default thresholds for the face detection algorithm.

  // Thresholds for the face detection algorithm.
  double face_size_min_m_; 
  double face_size_max_m_; 
  double max_face_z_m_; 
  // Thresholds for face tracking.
  double face_sep_dist_m_; 
  // Create an empty list of people.
  Faces();

  // Destroy a list of people.
  ~Faces();


  vector<Box2D3D> detectAllFacesDisparity(const cv::Mat &image, double threshold, const cv::Mat &disparity_image, image_geometry::StereoCameraModel *cam_model);

  vector<Box2D3D> detectAllFacesDepth(const cv::Mat &image, double threshold, const cv::Mat &depth_image, image_geometry::StereoCameraModel *cam_model);

  void initFaceDetectionDisparity(uint num_cascades, string haar_classifier_filename, double face_size_min_m, double face_size_max_m, double max_face_z_m, double face_sep_dist_m);


  void initFaceDetectionDepth(uint num_cascades, string haar_classifier_filename, double face_size_min_m, double face_size_max_m, double max_face_z_m, double face_sep_dist_m);

 private:

  vector<Face> list_;  
  vector<Box2D3D> faces_; 
  cv::Mat cv_image_gray_;  
  cv::Mat const* disparity_image_; 
  cv::Mat const* depth_image_; 
  image_geometry::StereoCameraModel *cam_model_; 
  boost::mutex face_mutex_, face_done_mutex_, t_mutex_; 
  boost::mutex* face_go_mutex_;
  boost::thread_group threads_;
  boost::condition face_detection_ready_cond_, face_detection_done_cond_; 
  int num_threads_to_wait_for_;
  int images_ready_;

  /* Structures for the face detector. */
  cv::CascadeClassifier cascade_;  
  void faceDetectionThreadDisparity(uint i);
  void faceDetectionThreadDepth(uint i);

};

};

#endif